Karl bloom



K. BLOOM.

TRUCK WHEEL IMPELLER. APPLICATION FILED JULY 25. I916- mauswzo FEB. 20.1919.

51,303,534. V Patented May 13, 1919.

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InvEnTmr' Karl EFLEJEJTTL,

His Aficmnegs.

THE NORRIS FEYERS C0. '(Nvm-Lrrum, W Y SHINmoM :1 cv

UNITED STATES PATENT oFFfoE.

KARL BLOOM, or new YORK, 1v. Y.

Y TRUCK-WHEEL IMPELLER).

I Specification of Letters Patent May 13,1919, I

Application fllegl Ju1y25, 1916, Serial No. 111,182. Renewed February20, 1919. Serial No. 278,236.

To all whom it may concern: 1 i 5 k r Beit known that I, KARL 'BLOOMytLc1t1- zen of the United States, and a resident of New York,in thecountyof Bronx and State of New York, have invented a certain new anduseful Improvement in Truck-Wheel Impellers, of which the following is aspeci fication. 1 My present invention relates to attachments for thewheels of motor trucks to embrace portions ofsthe treads of the wheelsto impel the sameor cause the wheels to move on should their tractivequalities become impaire'dby entrance into mud holes or icy depressionsin the road. The principal objects of my invention are to provideimpellers formotor truck wheels which be quickly attached to or detachedfrom the wheels; devices of the character described which may be readilyadjustedto snugly embrace the tread portions of the particular wheels towhich they are attachedgand, impellers which are so constructed as topresent no projections inwardly ofthe wheel, liable to engage chains,brake rods, bands, or other elements in olos proximity to the wheel.

Other objects of my invention will appear in the following detaileddescription, taken in connection with the accompanying drawing, forminga part-of this specification, and in which drawing:

Figure 1 is a plan view of a motor truck wheel showing an impeller,constructed according to my invention, applied thereto.

Fig. 2 is an enlarged detailed view partly in central vertical sectionand partly in elevation of an impeller.

Fig. 3 is a bottom plan view of the same.

In the drawing, where similar characters refer to similar parts, Adesignates a motor truck wheel including a hub B, spokes C, felly D,tire E, and demountable tire retaining rings F; and, Gr an impellerconstructed according to my invention.

The impeller is particularly adapted for use on the wheels of motortrucks which have a comparatively wide tread surface, and which sustainheavy loads. It comprises a tire embracing section 4C; a retainer 5adapted to engage the felly E of the wheel A between spokes C; and,means 6 for detachabl connecting the end portions of the tire'em racingsection 1 with the retainer 5.

Referring first to the tire embracing section 4, it is formed to providean elongated relatively flat tread engaging portion 7,

provided with spurs or ribs 8 on its outer i extendingfrom the ends ofthe tread engag= ing portion 4:, to lie laterally of the wheel at eachface thereof, when the impeller is disposed in operative relation to thewheel.

It is preferred to formthe arms 9 each of two parts 10 and 11, the parts10 being integral with portion 7, while the parts 11 are adjustablycarried by the parts 10 as bytiej rods 12 having screw-threadedengagement in alined longitudinally extending screwthreaded bores 13andl lprovided in each part of arms 10 and .11, said bores beingscrew-threaded in opposite direction so that as the tie rod 12 isrotated in one direction, theparts 10 and 11 are drawn toward oneanother whereas, ifit is rotatedin a counter directiomthe parts 11 and11 are moved away from one another. Each tie rod 12 may be provided withwrench engaging faces 15 disposed within the planes of the faces of theparts of their respective arms, so that there is no obstructionexteriorly of the arms to engage partsof the motor truck. Referringnowto the retainer 5, it may consist of a bar of metal provided witheyes 16 adapted to "cooperate with an eye 17, carried by one of theparts 11 at the free end of one of the arms 9, while the opposite end ofthe bar may be provided with a single eye 17 to cooperate with eves 18carried by the other arm at its free end. The means 6, in the exampleshown, in the form of a bolt, may extend through the alined eyes 16 and17 of one arm 9, while the means at the opposite end may consist of abolt 19 extending through alined eyes 17 and 18, a nut 20 being providedturned upon bolt 19' to retain same against casual displacement.

I prefer to arcuate the arm 9, which is disposed inwardly of the vehiclewheel, as indicated at 21, and to have the convex of the arm outermostwith respect to the impeller, and under which conditions, the hinged eye17 is turned outwardly but not to project beyond the convex face of thearm, as clearly shown in Fig. 2. Thus, the impeller may be secured abouta portion of the tread of the tire and its felly, snugly engaging thewheel structure laterally but so as to present very little in the way ofprojections at the interior face of the wheel,

" about its pivotal connection with the other arm 9. The device is thenplaced into oper-.

ative relation to the truck wheel so that the portion 7 engages thetread of the tire with the arms laterally of the wheel at each. face.

thereof. After swinging the retainer 5 s0 that-its eye 17 is inoperative relation to the eyes 18 of arm 9, the bolt 19 may be placed,as hereinbefore described, retaining the impeller on the rim of thewheel in place. If there is play between the retainer 5, and

the portion 7, the tie rods 12 may be rotated so asto draw the parts ofarms 9 toward each other sufiiciently to hold the retainer againstmovement circumferentially of the wheel. Power is then applied to thedriving wheels, and the spurs 8 engaging more solid ground, willimpel orcause the wheel to move on whereafter the impeller may be removed fromoperative relation to the wheel.

Changes in details may be made without departin from the spirit or scopeof my invention; ut.

I claim 1. A truck wheel impeller comprising, a

. tire embracing section formed to provide an elongated relatively flattread engaging portion, arms extending from the ends of said treadengaging portion to lie against the side faces of the wheel, each ofsaid arms composed of a pair of sections, means for permitting of rigidadjustable connection between the Sections of each arm, whereby thelength of the arms may be varied, one of the sections of one of saidarms being curved inwardly and rolled outwardly to form a hinge eyelying inwardly of the outermost line of the main body portion of thearm, a retainer hingedly connected with said eye to extend across thefelly of a wheel, and means for detachably securing the free end of saidretainer to the arm opposite to the arm having the eye formed thereon.

2. A truck wheel impeller comprising with a tire embracing sectionformed to provide an elongated relatively flat thread en gaging portionhaving arms extending from the ends thereof to lie against the sidefaces ofthe wheel, one of said arms being curved in and provided with anoutwardly extending hinge eye formed to lie inside of the outermost lineof the main body portion of the arm and to avoid lateral extension, aretainer hingedly connected with said eye to be swung across to bearupon the telly of the wheel, and means for detachably securing the freeend of said retainer to that arm of the tire embracing section oppositeto the arm having the hinge eye formed thereon.

KARL BLOOM.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patentt.

, v Washington, D. O.

